
M
40Msps, 12-Bit ADC
_______________________________________________________________________________________
7
Typical Operating Characteristics
(V
DD
= 3.3V, OV
DD
= 2.0V, GND = 0, REFIN = REFOUT (internal reference), C
REFOUT
= 0.1μF, C
L
≈
5pF at digital outputs, V
IN
= -0.5dBFS
differential input, DCE = high, CLKTYP = high, PD = low, G/
T
= low, f
CLK
= 40MHz (50% duty cycle), C
REFP
= C
REFN
= 0.1μF to GND, 1μF
in parallel with 10μF between REFP and REFN, C
COM
= 0.1μF in parallel with 2.2μF to GND, T
A
= +25
°
C, unless otherwise noted.)
SINGLE-TONE FFT PLOT
(8192-POINT DATA RECORD)
M
FREQUENCY (MHz)
A
16
12
8
4
-100
-110
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0
20
f
CLK
= 40.0004Msps
f
IN
= 9.8975MHz
A
= -0.5dBFS
SNR = 68.72dBc
SINAD = 68.67dBc
THD = -88.4dBc
SFDR = 92.18dBc
HD5
HD3
HD2
SINGLE-TONE FFT PLOT
(8192-POINT DATA RECORD)
M
FREQUENCY (MHz)
A
16
12
8
4
-100
-110
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0
20
f
CLK
= 40.0004Msps
f
IN
= 19.9074MHz
A
= -0.5304dBFS
SNR = 68.71dBc
SINAD = 68.67dBc
THD = -89.7dBc
SFDR = 92.4dBc
HD2
HD3
SINGLE-TONE FFT PLOT
(8192-POINT DATA RECORD)
M
FREQUENCY (MHz)
A
16
12
8
4
-100
-110
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0
20
f
CLK
= 40.0004Msps
f
IN
= 70.0837MHz
A
= -0.48dBFS
SNR = 68.22dBc
SINAD = 68.16dBc
THD = -86.9dBc
SFDR = 90.1dBc
HD4
HD5
HD2
TWO-TONE FFT PLOT
(16,384-POINT DATA RECORD)
M
FREQUENCY (MHz)
A
16
12
8
4
-100
-110
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0
20
f
CLK
= 40.0004Msps
f
IN1
= 44.0019MHz
A
IN1
= -7.0dBFS
f
IN2
= 46.0039MHz
A
= -7.0dBFS
SNR = 64.64dBc
SINAD = 64.63dBc
SFDR
= 88.3dBc
IMD = -85.21dB
IM3 = -93.89dBc
f
IN1
f
IN2
TWO-TONE FFT PLOT
(16,384-POINT DATA RECORD)
M
FREQUENCY (MHz)
A
16
12
8
4
-100
-110
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0
20
f
CLK
= 40.0004Msps
f
IN1
= 69.0022MHz
A
IN1
= -7.0dBFS
f
IN2
= 71.0041MHz
A
= -7.0dBFS
SNR = 64.01dBc
SINAD = 64.00dBc
SFDR
= 88.44dBc
IMD = -85.56dB
IM3 = -88.65dBc
f
IN1
f
IN2
INTEGRAL NONLINEARITY
M
DIGITAL OUTPUT CODE
I
3584
3072
2048 2560
1024 1536
512
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0
4096
DIFFERENTIAL NONLINEARITY
M
DIGITAL OUTPUT CODE
D
3584
3072
2048 2560
1024 1536
512
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.5
0
4096